Floor-gate-actuating device for elevators.



110.870,86@ PATBNTED N0v.12, 1907.

` B. o. UNGAR. FLOOR GATE AGTUATING DBVIGBPOR BLEvAToRs.

APPLICATION FILED JULY 20I 1906.

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M10-Waff #WWW PATENTED NOV. 12, 1907.

E. O. UNGAR. E FLOOR GATE ACTUATING DEVICE FOR ELEVATORS.

` APPLICATION FILED JULY zo. 190s.

No. 870,860- l PATENTED NOV. l2, 1907. E. O. UNGAR.

FLOOR GATE AOTUATING DEVICE FOR ELEVATORS.

APPLICATION FILED JULY zo. 1906,

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UNITED STAT S PATENT OFFICE.

ELGIN O. UNGAR, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TO FRANK D. GUERTIN, OF MINNEAPOLIS, MINNESOTA.

FLOOR-GATE-ACTUATING DEVICE FOR ELEVATORS.

Specification of Letters Patent.

Patented Nov. 12, 1907'.

Application filed July 20. 1906. Serial NoB 327.025v

To all 'whom it may concern:

Be it known that I, ELGIN O. UNGAR, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Floor- Grate-Actuating Devices for Elevators, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved device for automatically closing and opening elevator shafts, and to this end it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views. i'

Referring to the drawings, Figure l is a view principally in side elevation, showing my invention as applied to an elevator shaft, some parts being broken away, some parts being sectioned, and some parts Vbcing removed. 'Fig 2 is a vertical section taken on the Fig. 3 is a fragmentary section taken on the same line as Fig. 2, but illustrating difforent positions of the parts; and Fig. 4 is a horizontal section taken on the line x4 at" of Fig. l.

I1he numeral l indicates the four corner posts of the rigid frame-Work of the elevator shaft, and the numeral 2 indicates the vertical guides for the elevator car.

The numeral 3 indicates one of the floors of a building, the same having the usual opening 4 through which the elevator car may pass. The shaft opening 4 in the fioor is adapted to be opened and closed by a gate preferably made up of two sections 5 that are adapted to slide horizontally in the guide channels 6, as shown, afforded by the guide strips 61L secured to certain of the joists 3EL of the floor structure 3. In practice, ofcourse, the opening in each of the several floors of the building through which the elevator shaft is passed should be provided with gates of the kind just described. For the sake of simplicity in the description, only the one gate will be hereinafter referred to. On one of the gate sections 5 adjacent to its inner edge, is a depending latch lug 7, and on the corresponding edge of the other gate section 5 is a spring pressed endwise movable latch bolt 8 having at one end a cam nosed latch hook 9 that is adapted to automatically engage the latch lug 7 when the two gate sections are forced together, and thereby lock the two gate sections in their closed positions. The hook 9 is adapted to be disengaged from the latch lug 7 by an endwise inward movement of the bolt 8 against the tension of its spring. For an important purpose which will presently appear,

the gate sections 5, at the outer extremities of their inner edges, are notched at l0 and are provided with projecting cam pins o1' lugs ll.

Only the main parts of the elevator car are shown in the drawings. Of the parts shown, the numeral 13 indicates the car floor or platform, which is rigidly secured to a pair of laterally spaced uprights I5 which, as shown, are of channel form and are arranged to slide vertically upon the car guiding strips 2. The uprights 13 are tied together at their upper portions by a heavy transverse beam 14 to which the car supporting cable l5 is attached in the usual or any suitable way.

At its sides, the car is provided with gate actuating cam ways which, described in the` singular, are constructed as follows: Rigidly secured to the adjacent car upright 13 and to a transverse bar 13*L thereof, is a pair of downwardly diverging channel shaped cam bars 1G, and in the same plane therewith, rigidly secured to the lower portion of said upright 13 and to the car floor l2, is a pair of reverscly disposed upwardly diverging channel-shaped cam bars 17` The lower ends of the cam bars 16 are provided with vertically depending pivoted channel-shaped extensions 1G, and the upper ends of the upwardly diver-ging cam bars 17 are provided with pivoted vertically extended channelshaped extensions 17a. vNormally, the corresponding bar extensions IGIL and I7 aline with each other, as shown by full lines in Fig` 2. The free ends of the said channel bar extensions 1G*L and I7 normally bear against and are guided and alined by the flanged ends of a transversely extended bracket 18 which .is secured at its intermediate portion to the corresponding upright 13. To the intermediate portion of the bracket I8 is intermcdiately pivoted a pair of double ended bell cranks 19 and 20. Two of the arms of the double ended bell crank I9 areiconnected by links 2]. to projecting studs 22 on the free ends of the pivoted cam bar extensions or sections 16u; and the third arm of said bell crank is pivotally connected to the lower end of a link 23.

Two of the arms of the lower bell crank 20 are connected by links 24 to projecting studs 25 on the free upper ends of the cambar extensions or sections 17*L and the third arm of said bell crank is pivotally connected to the lower end of a link 2G. The links 26, at the opposite sides of the car, are pivotally connected to short arms 27 of a rock shaft 2S, which rock shaft ex tends transversely across the car and is journaled at its ends in suitable bearings on the uprights I3 of said car. A link 29 connects one of the arms 27 to an operating lever 30 (see Fig. 2) which, as shown, is pivotally mounted on one of the uprights 13 near the car floor l2. With this arrangement, by means of the lever 30, all four of the cam bar sections or extensions 17l1 may be simultaneously moved to and from alined positions with respect to the lower ends of the pivoted cam bar extensions 16a.

The links 23, at the opposite sides of the car, are connected ,to short arms 31 oi a rock shaft 32 that extends transversely o the car and is journaled at its ends in suitable bearings on the uprights of the car. A link 33 connects one of the arms 3l to an'operating lever 33/ (see Fig. 2) which, as shown, is pivotallymounted on one of the uprights 13 near the car floor 12. By rocking movements of this rock shaft 32, the four upper pivoted cam bar extensions or sections 16n may be simultaneously moved from their full line positions into their dotted line positions (Fig. 2) and vice versa. At the junction of the upper ends of the cam bars 16 is a small cam 34, and at the junction of the lower ends of the cam bars 17 is a similar cam 35. The cam 34 is so located that when the elevator is moved upward, it will engage the outwardly projecting end of the latch bolt 8 and release the latch hook 9 from the latch lug 7, and thus uncouple the two gate sections 5 before the cam bars 16 are thrown into action on the said gate sections. The cam 35 is so located that it will act in the manner above described and uncouple the gates when the car is moving downward, just before the cam bars 1.7 are thrown into action on the gate sections.

The upper extremities of the cam bars 16 and the lower extremities of the cam bars 17 stand in position to engage the corresponding cam pins l1 of the respective gate sections when the gate is closed. When the adjustable cam bars 16ft and 17u are alined as shown by full lines in Fig. l, and the car is moved upward, the diverging cam bars 16 acting on the cam pins 11 of the gate sections, will force the said gate sections into open positions, thereby permitting the car to pass, and after the car has passed th e` downwardly diverging cam bars 17 will force the said gate sections back into closed positions, in which closed position they will be automatically latched by the coperating latch hook 9 and latch lug 7. As is evident, under the 'downward movement of thev car, a reverse action takes place; that is, the cam bars 17 serve to open up the gate sections, .and the cam bars 16 serve to close the same after the car has passed below the gate.

It is sometimes desirable to leave the gates in the floor openings open after the car has passed therethrough. This action is made possible by the pivoted cam bars or cam way sections. lf, for instance, when the car is going upward, the pivoted cam bars 16 be moved outward into positions indicated by dotted lines in Fig. 2, it is evident that the gate sections 5 will be opened up, but that they will not be closed by the car after its upward movement, because the cam pins 11 of the said gate sections will be moved outward beyond the upper ends oi the cam bar sections 1711. It, on reaching the top oi the elevator shai't, the cam bar sections 16a be then moved back -into their full line positions (Fig. 2) it is evident that the car may thereafter `be run upward and downward without any action whatj ever upon the gate sections 5. When it is desired to again render the cam bars operative on the sliding gate sections, the cam bars 16, the car then be moved downward, should be moved outward into their dotted line positions (Fig. 2), in which positions they will engage the cam pins 1l of the said gate sections and again direct the said cam pins back into the diverging ,cam bars 16.

As is evident, the above described action of throwing the gate sections into open positions and to again bring the same back into positions subject to the cam bars, may be performed by adjustmentsof the lower pivoted cam bar section 17a. These lower pivoted cam bars 17 should be used to throw the gates into extreme open positions when the car is moving downward, and they should be used to bring the gates back into closed positions when the car is moving upward.

As is evident, the mechanism above described makes it possible to manipulate the gate in the iioor openings in any desired manner entirely by means carried by the car and within easy reach ofthe operator oi' the car.

It will of course be understood that .in the drawings of this application many of the partsof the car have been left off. The car in practice may be oi any desired design or type, and the novel devices above described and hereinafter claimed maybe applied to either freight or passenger elevators.

What l claim is:

1. The combination with an elevator car and a floor gate, of cam bars on said car operative on said gate to open and close the same, including a'pivoted cam bar section movable, at will, into a position to leave the said gate standing open after the car has passed the same, substantially as described.

2. The combination with an elevator car and a two part iioor gate, of reversely diverging upper and lower cain bars on said car, operative on said gate sections to open and close the same, said cambars having pivoted intermediate sections adapted to be moved into and out of `line to'connect and disconnect the corresponding members of said cam bars, substantially as described.

3. The combination with an elevator car and a iioor gate made up of sliding sections, of the upper downwardlyv diverging cam bars 16 and the lower upwardly diverging cam bars 17 carried by said car and provided with the pivoted intermediate sections 16fL and 17a respectively, the said bars being duplicated on the opposite sides of the car and arranged for action on the projections of the gate sections to open and close the same, connections whereby the four pivoted sections 16EL may be simultaneously moved into and out of line with the corresponding lower pivoted sections 17, and means whereby said four lower pivoted sections 17'l may be simultaneously moved into and out of line with the corresponding upper pivoted section 16a, substantially as described.

In testimony whereof I ax my signature in presence of two witnesses.

' ELGIN O. UNGAR. Witnesses MALIE HoEL, F. D. MERCHANT. 

